On Call NJ has built its reputation in Randolph on one simple promise: dependable plumbing, day or night.
Our technicians arrive in Randolph on time, in uniform, and ready to explain exactly what's going on before any work begins.

Local Plumbing, Heating & Cooling in Randolph
Many homes in Randolph were built decades ago, and aging supply lines and drains are some of the most common calls we get in Morris County.
That's why so many Randolph homeowners keep our number handy. From the first call to the final fix, we focus on doing the job right and treating your home with respect.
Our Services in Randolph, NJ
We handle the full range of plumbing, heating, and cooling needs for Randolph:
Emergency Plumbing in Randolph
24/7 emergency plumbing repairs
View DetailsDrain Cleaning in Randolph
fast clog removal for sinks, tubs & main lines
View DetailsSewer Line Service in Randolph
main sewer line cleaning, camera inspection & repair
View DetailsWater Heater Repair & Installation in Randolph
repair & replacement for tank and tankless heaters
View DetailsPlumbing Repair in Randolph
leaks, faucets, toilets, fixtures & repiping
View DetailsHeating Repair in Randolph
boiler & furnace repair, service & installation
View DetailsAir Conditioning Repair in Randolph
AC repair, tune-ups & new system installation
View DetailsWhy Randolph Chooses On Call NJ
24/7 Emergency Response
We answer calls around the clock and dispatch fast when Randolph needs us most.
Workmanship You Can Trust
We stand behind every repair and installation we complete in Randolph.
Upfront, Honest Pricing
You approve a clear price before work starts. No hidden fees on any Randolph service call.
Same-Day Availability
Many Randolph repairs can be handled the same day you call.
Frequently Asked Questions
Because we serve Randolph and the surrounding Morris County area directly, we're often able to reach you the same day, and quickly for true emergencies. Call 862-860-1807 and we'll give you an honest time estimate.
Yes. On Call NJ offers 24/7 emergency service throughout Randolph and all of Morris County. Whenever a plumbing, heating, or cooling emergency strikes — day, night, weekend, or holiday — call 862-860-1807 and we'll respond fast.
Absolutely. Every technician who works on a Randolph home is fully licensed and insured, so your project is handled to code and you carry no liability.
We handle emergency plumbing, drain cleaning, sewer line service, water heater repair and installation, general plumbing repair, heating, and air conditioning for Randolph homes and businesses.
From the first call to the final fix, On Call NJ is committed to doing right by every Randolph customer.